Question

Given that f(x)=13x^2+156, find x

Answer 1

Answer:

The value of x are $x=2\sqrt3 i,-2\sqrt3 i$

Step-by-step explanation:

Given : Function $f(x)=13x^2+156$

To find : The value of x?

Solution :

To find the value of x we equation the function to 0,

i.e. f(x)=0

$13x^2+156=0$

Subtract 156 both side,

$13x^2=-156$

Divide by 13 both side,

$x^2=-\frac{156}{13}$

$x^2=-12$

Squaring both side,

$\sqrt{x^2}=\sqrt{-12}$

$x=\pm 2\sqrt3 i$

Therefore, The value of x are $x=2\sqrt3 i,-2\sqrt3 i$

Answer 2

Simplifying
f(x) = 13x2 + 156

Multiply f * x
fx = 13x2 + 156

Reorder the terms:
fx = 156 + 13x2

Solving
fx = 156 + 13x2

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = 156x-1 + 13x